Eaton FLB221 TT50 2 Circuit Breaker - Thermal Magnetic
Part Number: FLB221 TT50 2
Quick Summary
Eaton FLB221 TT50 2 circuit breaker provides reliable overcurrent protection for hazardous area electrical installations. Customers struggle with downtime and compliance when selecting protection for explosion-prone environments. This unit is NEC/CEC certified for hazardous locations with Class I, Division 1 and 2, Class II, Division 1 and 2, and Class III ratings, plus compatibility with NEMA 3, 4, 7, 9. In practice, it pairs a rugged copper-free aluminum enclosure with a threaded cover for easy installation and long service life in demanding plant environments. For engineers and procurement teams, its two-pole 50 A rating suits motor feeders and control panels, while standardization with Eaton and the Crouse-Hinds line ensures parts availability and service support.
Product Information
Extended Description
FLB221 TT50 2 Eaton: Eaton Crouse-Hinds series FLB circuit breaker, 50A, TEB frame type, Thermal magnetic, Threaded cover construction, Copper-free aluminum, General Electric breaker, Two-pole, Non-interchangeable trip, 1", 240 Vac/125-250 Vdc
Product Name
Eaton Crouse-Hinds series FLB circuit breaker
Catalog Number
FLB221 TT50 2
UPC
782274012247
Product Length/Depth
6.25 in
Product Height
10.25 in
Product Width
7 in
Product Weight
24 lb
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class I, Division 2 Class II, Division 1 Class II, Division 2 Class III
NEMA Rating
3 4 7 9
Enclosure
With circuit breaker
Amperage Rating
50 A
Circuit breaker type
Thermal magnetic
Voltage rating
240 Vac/125-250 Vdc
Number of poles
Two-pole
Trade size
1"
Manufacturer
General Electric
Circuit breaker frame type
TEB
Enclosure cover construction
Threaded
Enclosure material
Copper-free aluminum
Special features
Non-interchangeable trip
FLB Series Explosionproof Circuit Breakers catalog page
FLB Explosionproof Circuit Breakers Canadian certification
FLB Explosionproof Circuit Breakers Canadian certification
IF 1016 - FLB Series Circuit Breakers
Eaton Specification Sheet - FLB221 TT50 2
Thermal magnetic trip with a non-interchangeable trip curve provides precise overcurrent protection. This feature reduces nuisance trips while ensuring rapid fault clearance, leading to higher equipment uptime in hazardous environments. The result is safer, more reliable control of motors and feeders in chemical plants and oil facilities. Copper-free aluminum enclosure combined with threaded cover delivers corrosion resistance and a robust seal, simplifying servicing and enabling longer service life in demanding environments. The enclosure design also reduces weight for easier installation and mounting in crowded switchgear or motor control centers, supporting faster commissioning and reduced installation costs. With a 1" trade size and two-pole configuration, the unit fits compact panels and standard conduit arrangements while leaving room for future expansion. NEC/CEC compliance and NEMA ratings 3, 4, 7, 9 provide documented performance in combustible and rugged environments, reducing inspection risk and supporting regulatory alignment. This protection is ideal for explosionproof circuits in oil, gas, mining, and chemical processing facilities where safety and uptime are paramount. The non-interchangeable trip reduces maintenance risk by preventing inadvertent reset after a fault, delivering consistent protection and simplified asset management. Installation compatibility with common control panels and standard MCCs ensures straightforward integration with existing plant architectures and procurement pipelines.
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FAQs
The FLB221 TT50 2 is designed for two-pole protection in hazardous environments and fits standard 1" conduit and panel spaces. Its copper-free aluminum enclosure with threaded cover supports robust mounting in control panels, MCCs, and explosionproof circuits, while meeting NEC/CEC guidance for Class I/Division 1 and 2, Class II/Division 1 and 2, and Class III locations.
Key specifications include a 50 A amperage rating, thermal magnetic trip, two-pole configuration, 1" trade size, and a voltage rating of 240 Vac / 125–250 Vdc. The unit is designed to operate within these limits in industrial facilities, with a 50 A protection level suitable for motor feeders and small power circuits.
Yes. It is certified for hazardous locations under NEC/CEC standards, including Class I Division 1 and 2, Class II Division 1 and 2, and Class III, with compatible NEMA ratings 3, 4, 7, 9. This aligns with regulatory requirements for chemical, petrochemical, and mining environments, helping avoid noncompliance penalties and downtime.
Plan for standard panel mounting and routine inspection of the threaded cover seals, enclosure integrity, and connection terminals. The copper-free aluminum enclosure reduces corrosion risk and weight, facilitating faster field service. The non-interchangeable trip reduces maintenance uncertainty by preventing incorrect trip modifications, supporting long-term reliability.
Its explosionproof design and NEC/CEC compliance minimize regulatory risk while delivering reliable protection for motors and feeders. The durable enclosure and threaded cover simplify maintenance and replacement, reducing downtime. Combined with fast fault clearing and a compact footprint, it lowers installation costs and parts inventory needs in oil, gas, mining, and chemical processing facilities.